I only rode this once... and those old pictures tell me why. Goodness, I abhor Disney's 1980's interior murals.
I quite like those murals - they weren't always grand or great, but when they worked, they worked.
Looking at the new photos you can see that the area aside from the island in the middle is essentially stripped of any decor. The mural are painted over black and all the foliage is removed. You can tell it's not just because of how the photo is framed because some of the key lighting sources are still in place letting you know which walls are the same walls.
I'm not saying a Frozen attraction needs these murals, but something there instead of a black wall would be appreciated.